[Qgis-developer] Building QGIS 2.x with Qt 5.x?

[Dave Johansen]

Sorry this was a stupid user error on my part. I cloned your repo but was
still on the master branch. Once I switched to the qt5 branch it worked.
I've attached a patch that fixes a few compiler errors because gcc 4.4
requires that the the template type be specified in the construction of the
base class. I believe that the change shouldn't change anything on a
compiler that the code already built with.

The other issue that I ran into with the build process is that it didn't
set the value for QT_LRELEASE_EXECUTABLE even though /usr/bin/lrelease-qt5
was on the system. Once I set it using
"-DQT_LRELEASE_EXECUTABLE=/usr/bin/lrelease-qt5" it built just fine, but if
possible, it would be nice if this value was auto-detected and set like the
rest of the values. I don't know the first thing about cmake, so
unfortunately I'm no help in trying to fix this or I'd look into it and try
to make a patch for that as well.

Also, it appears that there's not PyQt5 in the EPEL repository, so
unfortunately I can't test that at this time.

Thanks for all the help and the work to get QGIS working with Qt5,
Dave


On Thu, Sep 4, 2014 at 8:06 AM, Matthias Kuhn <matthias.kuhn at gmx.ch> wrote:

> Hi Dave,
>
> Are you sure you have checked out the correct branch from my private
> repository (link in my first response)?
> There is no support for this in master yet.
>
> The definition of the cmake variable can be seen here[1]
>
> Best
> Matthias
>
> https://github.com/m-kuhn/QGIS/blob/final-2_4_0-qt5/CMakeLists.txt#L222
>
>
> On Thu 04 Sep 2014 04:56:12 PM CEST, Dave Johansen wrote:
>
>> I tried doing "-DENABLE_QT5=TRUE" and "-DENABLE_QT5:BOOL=TRUE" and it
>> still doesn't work. In CMakeCache.txt, it says "//No help, variable
>> specified on the command line.". Any recommendations on what else to try?
>> Thanks,
>> Dave
>>
>>
>> On Thu, Sep 4, 2014 at 12:46 AM, Matthias Kuhn <matthias.kuhn at gmx.ch
>> <mailto:matthias.kuhn at gmx.ch>> wrote:
>>
>>     Hi Dave,
>>
>>     IIRC you only have to set the cmake option ENABLE_QT5=TRUE
>>
>>     Matthias
>>
>>     On 09/02/2014 10:07 PM, Dave Johansen wrote:
>>
>>>     I'd be glad to give it a try and help resolve any issues. What do
>>>     I need to do to build it? I tried running cmake and it is still
>>>     looking for Qt4, so how do I tell it to build with Qt5?
>>>     Thanks,
>>>     Dave
>>>
>>>
>>>     On Tue, Sep 2, 2014 at 11:41 AM, Matthias Kuhn
>>>     <matthias.kuhn at gmx.ch <mailto:matthias.kuhn at gmx.ch>> wrote:
>>>
>>>         Hi Dave,
>>>
>>>         I have ported large portions of the code to Qt5 (for
>>>         Android). It has
>>>         not been widely tested but runs quite stable here on Fedora
>>>         (so not far
>>>         from RHEL). However, due to missing pyqt packages I could not
>>>         test
>>>         python support (arriving in Fedora 21). If you want to give
>>>         it a try,
>>>         you can find the code here [1]
>>>
>>>         Good luck and let me know how it goes.
>>>
>>>         Matthias
>>>
>>>         [1] https://github.com/m-kuhn/QGIS/tree/final-2_4_0-qt5
>>>
>>>         On Die 02 Sep 2014 20:38:28 CEST, Dave Johansen wrote:
>>>         >
>>>         http://gis.stackexchange.com/questions/62548/can-i-use-
>>> qgis-with-qt5
>>>         > The above link indicates that QGIS 2.x can't be built with
>>>         Qt 5.x and
>>>         > I was curious how much work would be involved in resolving
>>>         that.
>>>         >
>>>         > I ask because I'm using RHEL 6 which comes with Qt 4.6 and
>>>         so I can't
>>>         > build QGIS 2.x with that because it requires 4.7. Qt 5.x is
>>>         available
>>>         > in the EPEL so I was wondering what would be involved in
>>>         making it so
>>>         > I could use that. If it's not too big of an effort, then I
>>>         could
>>>         > potentially help with the work but I wanted to find out
>>>         what it would
>>>         > involve before I dove into anything.
>>>         >
>>>         > Thanks,
>>>         > Dave
>>>         >
>>>         >
>>>         > _______________________________________________
>>>         > Qgis-developer mailing list
>>>         > Qgis-developer at lists.osgeo.org
>>>         <mailto:Qgis-developer at lists.osgeo.org>
>>>         > http://lists.osgeo.org/mailman/listinfo/qgis-developer
>>>
>>>
>>>
>>>
>>
>>
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